201020560 has 80 divisors (see below), whose sum is σ = 505842624. Its totient is φ = 73852416.

The previous prime is 201020557. The next prime is 201020587. The reversal of 201020560 is 65020102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293979 + ... + 294661.

Almost surely, 2^201020560 is an apocalyptic number.

201020560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201020560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252921312).

201020560 is an abundant number, since it is smaller than the sum of its proper divisors (304822064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201020560 is a wasteful number, since it uses less digits than its factorization.

201020560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 201020560 is about 14178.1719555096. The cubic root of 201020560 is about 585.7965723319.

Adding to 201020560 its reverse (65020102), we get a palindrome (266040662).

The spelling of 201020560 in words is "two hundred one million, twenty thousand, five hundred sixty".